OKLCH to HEX: #00B8DB

Also known as: Tailwind cyan-500

oklch(0.72235 0.12976 217.955) → #00B8DB

Values are shown at full precision, so converting back gives exactly #00b8db. The rounded form is what you normally paste into CSS.

Step-by-step math

Every number below is computed from the input, nothing is looked up.

1. input
```
oklch(0.72235 0.12976 217.955)
```

2. OKLCH → Oklab

a = C·cos H = -0.10231
b = C·sin H = -0.07981

3. Oklab → LMS′

l′ = L + 0.3963·a + 0.2158·b = 0.664576
m′ = L − 0.1056·a − 0.0639·b = 0.738247
s′ = L − 0.0895·a − 1.2915·b = 0.834576

4. cube

l = 0.664576³ = 0.293517
m = 0.738247³ = 0.402350
s = 0.834576³ = 0.581297

5. LMS → linear sRGB

R = 4.0767·l − 3.3077·m + 0.2310·s = -0.000002
G = −1.2684·l + 2.6098·m − 0.3413·s = 0.479320
B = −0.0042·l − 0.7034·m + 1.7076·s = 0.708379

6. linear → sRGB, × 255

R = 0.00000 × 255 = 0.00 → 0
G = 0.72157 × 255 = 184.00 → 184
B = 0.85883 × 255 = 219.00 → 219

7. RGB → HEX
```
#00B8DB
```

All formats

HEX: #00b8db
RGB: rgb(0 184 219)
RGB (legacy): rgb(0, 184, 219)
HSL: hsl(189.59 100.00% 42.94%) → hsl(190 100% 43%)
HWB: hwb(190 0% 14%)
OKLCH: oklch(0.722 0.130 218.0) · oklch(72.2% 0.130 218.0)
OKLab: oklab(0.722 -0.102 -0.080)
Lab (D50): lab(68.50 -30.80 -29.27)
LCH (D50): lch(68.50 42.49 223.54)
Display P3: color(display-p3 0.3229 0.7107 0.8432)
Linear sRGB: color(srgb-linear 0.0000 0.4793 0.7084)

Gamut: sRGB and Display P3

#00B8DB is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.130 and Display P3 reaches 0.172; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #00b8db;
  color: rgb(0 184 219);
  color: hsl(190 100% 43%);
  color: oklch(0.722 0.130 218.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.722 0.130 218.0);
}
/* arbitrary values */
class="text-[#00b8db] bg-[oklch(0.722_0.130_218.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3229 0.7107 0.8432); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #00b8db calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

Lighter and darker, same hue and chroma

#34CCEF · oklch(0.782 0.130 218.0) · ΔL +0.06
#00A5C7 · oklch(0.662 0.130 218.0) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?